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Park, Sanguk,Kang, Byeongkwan,Choi, Myeong-in,Jeon, Seonki,Park, Sehyun Elsevier 2018 Sustainable cities and society Vol.39 No.-
<P><B>Abstract</B></P> <P>Currently, many researchers worldwide are focusing on creating a novel service model by integrating IoT (Internet of Things) technologies with ICT (Information and Communications Technologies) to increase energy efficiency by reducing power consumption and greenhouse gas emissions. This paper examines the problems related to the current integrated ESS (Energy Storage System) in a smart grid: high installation costs and low management efficiency. To solve these problems, this paper studies the development of a micro-distributed ESS in an intelligent LED (Light Emitting Diode) streetlight system, and its low-cost installation and high management efficiency in a micro grid. Through the application of this system, the initial installation costs can be reduced by using micro-distributed ESS and IoT-based intelligent energy management, facilitating power monitoring of the streetlights and energy efficient demand resource management in the micro grid. This provides a more intelligent and efficient environment, such as in a smart-city.</P> <P><B>Highlights</B></P> <P> <UL> <LI> This system is sufficient for providing alternative power using intelligent power peaks and demand resource management. </LI> <LI> These functions include power demand management, power stabilization, alternative power, and energy conservation. </LI> <LI> The LED system has advantages from the viewpoint of energy efficiency and service at the same time. </LI> <LI> In the future, this system can provide intelligent energy IoT services in cities for sustainability. </LI> <LI> This system can extend the core service technology in various fields such as the power demand management business. </LI> </UL> </P>
Design and implementation of intelligent energy distribution management with photovoltaic system
Insung Hong,Byeongkwan Kang,Sehyun Park IEEE 2012 IEEE transactions on consumer electronics Vol.58 No.2
<P>As increasing power consumption is becoming a huge problem, renewable energy has been highlighted recently. Many companies and research centers study this new sustainable energy, and various products have appeared to the public. However, this kind of researches concentrates on the elemental technologies, and now a management system is needed to manage these technologies to maximize energy efficiency. In this paper, we propose the system of Intelligent Energy Distribution Management (iEDM) to monitor fast-changing environmental variables and manage solar power flexibly. Compared with normal utility interactive systems, the iEDM improves the energy efficiency up to 5.6 percent.</P>
Jinsung Byun,Insung Hong,Byeongkwan Kang,Sehyun Park IEEE 2011 IEEE transactions on consumer electronics Vol.57 No.2
<P>Emerging green IT and smart grid technologies have changed electric power infrastructure more efficiently. These technologies enable a power system operator and a consumer to improve energy efficiency and reduce greenhouse gas emissions by optimizing energy distribution and management. There are many studies of these topics with the trend of green IT and smart grid technology. However, existing systems are still not effectively implemented in home and building because of their architectural limitations. Therefore, in this paper, we propose a smart energy distribution and management system (SEDMS) that operates through interaction between a smart energy distribution system and a smart monitoring and control system. Proposed system monitors information about power consumption, a user¿s situation and surroundings as well as controls appliances using dynamic patterns. Because SEDMS is connected with the existing power grid and with the newrenewable energy system, we consider integration of new renewable energy system through electric power control. We implemented proposed system in test-bed and carry out some experiments. The results show that a reduction of the service response time and the power consumption are approximately 45.6% and 9-17% respectively.</P>
Jinsung Byun,Sunghoi Park,Byeongkwan Kang,Insung Hong,Sehyun Park IEEE 2013 IEEE transactions on consumer electronics Vol.59 No.3
<P>Energy saving has attracted great attention as a global issue because of recent environmental problems. As a part of energy saving efforts, governments are operating policies that encourage the distribution of energy saving systems. Also, individual households are voluntarily installing energy saving systems to reduce electric power consumption. However, due to fixed system architecture, the existing systems have a disadvantage, lacking in scalability and usability. In addition, the existing systems bring up immense inconvenience as it returns to standby mode after automatic standby power cut-off. Therefore, we propose an intelligent energy saving system to solve these problems. The proposed system controls the power based on the hierarchical relationship among home appliances, along with the relationship between user activity and home appliances for standby power reduction. We designed and implemented the proposed system, deployed it in the test bed, and measured the total power consumption to verify the system performance. The proposed system reduces total power consumption up to 10.5%.</P>
Degradation diagnosis system of photovoltaic panels with mobile application
Beomseok Lee,Jinsung Byun,Myeong-in Choi,Byeongkwan Kang,Sehyun Park IEEE 2014 IEEE transactions on consumer electronics Vol.60 No.3
<P>Recently, the number of buildings and houses in which photovoltaic (PV) systems are installed has increased. However, an issue with the efficiency of the PV system and the degradation phenomenon has been revealed. Consumers who benefit from the PV system experience difficulties monitoring and controlling it because a PV diagnosis system is heavy and expensive to install at home. Furthermore, the existing diagnosis system is not coordinated with a home energy management system. In addition, the accurate performance evaluation of the PV system is required for energy management. Therefore, a new degradation diagnosis system for PV panels for household consumers is proposed in this paper. Additionally, a mobile-type home gateway that has various management applications is proposed. It is demonstrated that, with this mobile-type home gateway applied to the proposed system, consumers can monitor the degradation of the PV system, analyze the efficiency of the PV panels, and save energy at home by using a mobile-type home gateway.</P>
Leadless 페이스메이커용 심전도 측정 및 자극 신호 발생 회로
김경환(Kyounghwan Kim),유무경(Mookyoung Yoo),강상균(Sanggyun Kang),진병관(Byeongkwan),손혁태(Jin, Hyeoktae),남기배(Son, Kibae Nam),안승민(Seungmin Ahn),위지향(Jihyang Wi),고형호(Hyoungho Ko) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6
The electrocardiogram (ECG) sensing and pacing pulse generating circuit is a vital feature of the leadless pacemaker, which is an implantable device designed to regulate the hearts rhythm. Unlike traditional pacemakers, this device is placed directly inside the heart, without the need for a lead wire. The ECG sensing feature enables the pacemaker to monitor the hearts electrical activity, which allows it to detect any irregularities in the hearts rhythm. The device then adjusts the pacing rate of the pacemaker to ensure that the heart beats at a regular and consistent rate. The pacing pulse generating circuit delivers electrical stimulation to the heart to improve its function and reduce the risk of heart failure. The pacemaker can be programmed to provide different levels of stimulation, depending on the patients specific needs. To accomplish low noise characteristic and low power consumption, a current-feedback instrumentation amplifier (CFIA) is adopted In the ECG sensing channel, a 60-Hz notch filter is adopted to eliminate powerline interface (PLI). The input-referred noise is 3.69 VRMS and the power consumption are 4.5 μW to 19.4 μW. This low-power consumption characteristic increases the efficiency of the battery in the proposed leadless pacemaker.